Sucker-rod section



Jan. 6, 1931. H. H. BRooKs E'rAL 5 sucKER ROD SECTION Fild Jan. 14, 1928Patented Jan. 6, 1931 UNITED STATES HARRY H. BROOKS AND JAMES N. BISH,OF HAYNESVILLE, LOUISIANA SUCKER-ROD SECTION Application filed January14, 1928. Serial 10.246300.

The present invention relates to sucker rods for oil wells or the like,and aims to provide a novel and improved rod sect1on constructed forrelieving the rod of undue vlbra- 5 tion, friction between the rod andcasmg, and

torsional strain or twisting that causes unthreading of rod sections,all of which are very detrimental to rods, casings, and cups during thereciprocating of a rod 1n a caslIl inother obj ectof the invention isthe provision of a sucker rod section having the opposite ends thereofscrewthreaded, said rod section is constructed of members or sectionsslidably connected together longitudinally and having a torsion springtherebetweenfor taking up sudden shocks, one section having a squaredlug for engaging into a socket of the other section when said sectionsare forced together against the spring tension in order to lock saidsections against turning movement with relation to each other in orderthat other rod sections may be screwed together or apart withoutremoving our improved rod section.

It is also an object of the inventlon to provide a device of the aboveindicated 0 aracter, which is simple and substantial in construction,which can be manufactured economically, and which will be thoroughlyefficient and practical in use.

With the foregoing and other objects in View, which will be apparent asthe description proceeds, the invention resides in the construction andarrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is.claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of our improved sucker rod section,

Figure 2 is a longitudinal vertical section taken on line 2-2 of Figure1,

Figure 3 is a cross section taken on line 3-3 of Figure 1,

Figure 4 is a cross section taken on line 4-4 of Figure 2, and

Figure 5 is a cross section taken on line 5-5 of Figure 1.

Referring to the drawin s, the numeral 10 designates the upper mem er orsection of our improved sucker rod section, while the numeral 11designates the lower section thereof, the end of the upper section 10being threaded, as at 12, for convenience in connecting other rodsections of the sucker rod thereto, while the lower end of the section11- is provided with a threaded socket 13 for a similar purpose. Spacedbelow the reduced threaded end portion 12 of the upper section 10 is areduced squared portion 14 for providing wrench engaging surfaces, whilespaced from the lower end of the lower section is a similar reducedportion 15 for the same purpose. Thus it can be seen that either one ofthe sections 10 or- 11 may be engaged at the reduced squared portionsthereon in order to hold the same against turning movement. In each ofthe sections '10 and 11 is provided a slot 16 into which is mounted aroller 17 by means of a pin 18 extending through each section and havingthe ends thereof riveted so as to rotatably support the roller, the saidrollers being of greater diameter than the diameter of the sections 10and 11 so that they will protrude slightly beyond the same at oppositesides.

The lower section 11 has at its upper end a reduced screw threadedportion 19 with a square socket 20, the purpose of which will be setforth as the description proceeds. Threaded upon the reduced portion 19is the lower end of a sleeve 21 provided with a reduced cylindricalopening 22 in its upper end, which slidably receives a reduced lowerportion or cylindrical rod 23 formed intergrally with the upper section10, and on the lower end of this red is a collar 24, secured thereto bymeans of a pin 25 extending through said rod and collar. The lower endof the collar 24 is closed, as at 26, and on its lower end is formed adepending square lug 26"to fit into the square socket 20 in the upperend of the lower section 11 when the upper member of the sucker-rodsection is slid downward in the sleeve 21 to engage therewith.

Mounted upon the rod 23 of the upper memher or section is a coil sprin27 one end of which is in engagement with t e upper end of the sleeve 21while the opposite end engages a shoulder 28 formed by reducing thediameter of the section 10 in forming the rod 23. By referring to Figure2 of the drawings, it can be seen that the coil spring 27 will yieldablyhold the two sections 10 and 11 in their furthermost positions withrelation to each other with the collar 24 in engagement with the upperend of the sleeve 21. As the collar 24 and the interior of the sleeve 21are circular in cross section, it can be seen that the sections 10 and11 are permitted to turn with relation to each other, as the purpose ofthe coil spring is to normally hold the lug 26 out of engagement withthe socket 20. In the cylindrical wall of the sleeve 21 is provided aplurality of vertical slots 29 which Wlll permit access to the interiorof the sleeve such as when placing the pin 25 in position for retainingthe collar 24 on the end of the rod 23 and for eliminating thecompressing of air in 0pposite ends of the sleeve, which would interferewith the sliding movement of the sections with relation to each other.

. In operation, the improved rod section is used in connection with asucker rod within a well casing. The anti-friction rollers 17 on theupper and lower sections of our improved device will eliminate frictionbetween said device and the interior of the casing thus eliminating wearwhich eventually causes breakage. By providing a circular collar on thelower end of the rod 23 working in a sleeve of cylindrical formation, itcan be seen that the two sections of the device are permitted to freelyturn with relation to each other, so as to eliminate twisting of thesucker rod which often results in unscrewing of the sections thereof. Byhaving the 'coil spring 27 positioned about the rod 23 in engagementwith the section 10 and the upper end of the sleeve 21, it will be notedthat all shocks and jars are eliminated, which cause undue vibration ofthe sucker rod and often result in the.

breaking of sections thereof. Thus it can be seen that a sucker rodsection is provided which has a swivel connection therein to prevent thesections of the sucker rod from becoming unscrewed, a yieldable shockabsorbing means, and anti-friction rollers for eliminating wear betweensaid section and the casing.

By having the depending lug 26' on the upper section 10 and the socket20 in the lower section 11, it is possible to screw or unscrew the rodwithout removing our improved rod section, as the two sections 10 and 11may be locked against turning movement with relation to each other byforcing the two sections together against tension of the coil spring 27.

Having thus described our invention, what we claim as new is:

1. A sucker rod section comprising a pair of sections a rod carried byone of said sections, a collar attached to the end of said rod a sleeveslidably mounted on said rod and held thereon by said collar, means forconnecting said sleeve to the other section, spring means engaging saidsleeve and the section carrying said rod for holding said sleeve in itsfurthermost slidable position on said rod, and means on said collar andthe other section for engagement in order to lock the sections againstturning movement with relation to each other.

2. A sucker rod section comprising a pair of sections, a rod carried byone of said sections, a sleeve slidably mounted upon said rod, a collarattached to said rod for holding said sleeve on said rod, a springarranged about said rod and engaging said sleeve and the sectioncarrying said rod for yieldably holding said sleeve in its furthermostslidable position on the rod, means for attaching said sleeve to theother section, said other section having a socket therein of irregularformation, a lug carried by the collar also of irregular formation forengaging into the socket when the sections are slid together againstcompression of the spring, and means for locking the sections againstturning movement with relation to each other.

3. A sucker rod section comprising a pair of sections, a rod carried byone ofsaid sections, a sleeve slidably mounted upon said rod, a collarattached to said rod for holding said sleeve on said rod, a springarranged about said rod and engaging said sleeve and the sectioncarrying said rod for yieldably holding said sleeve in its furthermostslidable position on the rod, means for attaching said sleeve to theother section, said other section having a socket therein of-irregularformation, a lug of irregular formation carried by the collar forengaging the socket when the sections are slid together againstcompression of the spring, means for lockin the sections against turningmovement wit relation to each other, and a plurality of vertical slotsin the wall of said sleeve. 1

HARRY H. BROOKS. JAMES N. BISH.

